One way to chizel away at that would be to encourage 5-10% in BTC cold storage and the remaining in physical gold as usual. Both should be protected and secured with the the same level of care and will serve the same purpose (in case it is needed someday down the road).
Discussion
That might be the case one or two generations down the line.
The generational wealth transfer from boomers should speed things up as well.
Exciting times ahead